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Show 1891.] MAMMALS F R O M E A S T E R N AFRICA. 183 posteriorly, the notch behind it more than 5 millim. deep, as compared to about 3 millim. in the two allied species. Tragus large and broad, quadrangular, its tip sharply angular, and its outer upper border long and straight. Lips apparently not deeply wrinkled. Gular sac apparently present. Pads at base of thumb distinct. Lower incisors 4. Colour everywhere above, and on the chin, shoulders, and sides of thorax below dark brown ; chest, belly, base of tail, and thighs to below knees pure white. Nyctinomus lobatus. Under surface of head, showing ears and antitragus. a, tragus. Nat. size. Dimensions:-Head and body 77 millim., tail 56 ; tail free from membrane 30; ears, length from base of post-antitragal notch to tip 3 0 ; forearm 63 (=2-47 in.). This fine new Bat is distinguished at once from all the other species of the genus, except N. miarensis, Grand., and the two above-mentioned, by its much greater size, none of them having a forearm exceeding two inches in length. N. miarensis is at once separated by its structural characters and is not really allied to N. lobatus. Of the two species to which it is allied, N. africanus is a native of the Transvaal, and A. tceniotis of Abyssinia1, extending northwards over a great part of the Palsearctic region : the new form is therefore intermediate between them in habitat as in many of its characters ; but there can be no question as to the specific distinctness of all three. 6. SCIURUS RUFOBRACHIATUS, Waterh. a. Mount Elgon, in thick forest. 6000 ft. 25/2/90. b. Mount Elgon, in thick forest. 22/1/90. c. Mount Elgon. d. Savi, Mount Elgon. 14/2/90. This is a typically West-African species, and its occurrence on Mount Elgon still further extends its known range to the eastward 1 The Abyssinian N. midas, Sund., and N. ventrcdis, Heugl., are unquestionably, as Mr. Dobson has shown, synonymous with N. tceniotis. |